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PDF AP3606 Data sheet ( Hoja de datos )
| Número de pieza | AP3606 | |
| Descripción | 4/6 CHANNEL CHARGE PUMP CURRENT SINK | |
| Fabricantes | BCD Semiconductor | |
| Logotipo |  |
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Data Sheet
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER
AP3606/AP3607
General Description
The AP3606 and AP3607 are step-up DC-DC
converters based on 1x/1.5x charge pump and low
dropout current sink, which helps them maintain the
highest efficiency. The AP3606 is specially designed
to drive up to 4 WLEDs in backlight display while
the AP3607 is designed for 6 WLEDs.
These devices provide up to 20mA current for each
WLED. There are totally 16 steps of current control,
which is achieved through a digital pulse dimming
function on EN pin. Additionally, 1MHz high
switching frequency enables the use of small external
capacitors. Internal soft-start circuitry prevents
excessive inrush current during start-up and mode
transition.
The supply voltage ranges of AP3606 and AP3607
are from 2.7V to 5.5V which make them ideally suit
for applications powered by Li-ion battery.
These ICs are available in the tiny package of
QFN-3×3-16.
Features
• Regulated Output Current with ±3% Matching
• Drives up to 4 WLEDs at 20mA Each (AP3606)
Drives up to 6 WLEDs at 20mA Each (AP3607)
• 16 Steps Brightness Control Using Pulse Signal
Dimming
• Wide Operating Voltage Range: 2.7V to 5.5V
• High Operating Frequency: 1MHz
• Auto 1x/1.5x Charge Pump Mode Selection
• Built-in Soft-start
• Output Over Voltage Protection
• Built-in UVLO
• Built-in OTSD
• Operating Temperature Range: -40°C to 85°C
Applications
• Mobile Phone
• PDA
• MP3/4
QFN-3×3-16
Figure 1. Package Type of AP3606/AP3607
Jan. 2013 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
1
1 page  
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER
Recommended Operating Conditions
Data Sheet
AP3606/AP3607
Parameter
Input Voltage
Operating Ambient Temperature
Symbol
VIN
TA
Min
2.7
-40
Max
5.5
85
Unit
V
ºC
Electrical Characteristics
VIN=3.6V, VEN=VIN, TA=25ºC, CIN=C1=C2=COUT=1μF, VF(forward voltage)=3.2V, unless otherwise noted.
Parameter
Symbol
Conditions
Min Typ Max Unit
Input Section
Input Voltage
Under Voltage Lockout Threshold
Under Voltage Lockout Hysteresis
VIN ID=0mA to 80mA
VIN Falling
2.7 5.5 V
2.2 V
250 mV
Supply Current
Shutdown Supply Current
ICC
ISHDN
No Load
VEN=GND
1.7 3 mA
3 10 μA
Charge Pump Section
Switch Frequency
1x Mode to 1.5x Mode Transition
Voltage (VIN Falling)
1.5x Mode to 1x Mode Transition
Voltage (VIN Rising)
Current Source Section
WLED Current
fOSC
V1.5X
V1X
ID
VIN=3.0V, 1.5x Mode
0.7 1 1.3 MHz
AP3606
AP3607
AP3606
AP3607
VD=3.2V,
ID1=ID2=ID3=ID4=20mA
VD=3.2V,
ID1=ID2=ID3=ID4=
ID5=ID6=20mA
VD=3.2V,
ID1=ID2=ID3=ID4=20mA
VD=3.2V,
ID1=ID2=ID3=ID4=
ID5=ID6=20mA
3.5 3.6
V
3.7 3.8
V
100% Setting,
3.0V≤VIN≤5.0V
TA=-40ºC to 85ºC
18.5 20 21.5 mA
Jan. 2013 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
5
5 Page 
4/6 CHANNEL CHARGE PUMP CURRENT SINK FOR LED DRIVER
Typical Performance Characteristics (Continued)
TA=25ºC, CIN=C1=C2=COUT=1μF, VF=3.2V, unless otherwise noted.
Data Sheet
AP3606/AP3607
VC1+
2V/div
VOUT
1V/div
VEN
2V/div
IIN
0.2A/div
Time (100μs/div)
VC1+
2V/div
VOUT
1V/div
VEN
2V/div
IIN
0.2A/div
Time (400μs/div)
Figure 20. 1x Mode Turn on Characteristic
(AP3606)
Figure 21. 1x Mode Turn off Characteristic
(AP3606)
VC1+
2V/div
VOUT
1V/div
VEN
2V/div
IIN
0.2A/div
Time (100μs/div)
VC1+
2V/div
VOUT
1V/div
VEN
2V/div
IIN
0.2A/div
Time (400μs/div)
Figure 22. 1x Mode Turn on Characteristic
(AP3607)
Figure 23. 1x Mode Turn off Characteristic
(AP3607)
Jan. 2013 Rev. 1. 5
BCD Semiconductor Manufacturing Limited
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet AP3606.PDF ] | |
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